Sigma's 180mm f/3.5 APO EX DG HSM Macro is the only lens in its macro range with an HSM autofocusing motor - but only on the Sigma, Nikon-D and Canon mounts. Designed for use on full frame digital SLR cameras, but can also be fitted to DSLRs with smaller APS-C size sensors, where it covers a similar field of view to a 270mm lens when fitted to Nikon, Pentax and Sony cameras with 1.5x crop factors or 288mm with Canon DSLRs.
This page contains a snippet of article „Sigma 180mm f/3.5 APO EX DG HSM Macro Lens“. The article was originally published on Photo Review at http://www.photoreview.com.au/reviews/cameraaccessories/sigma-180mm-f35-apo-ex-dg-hsm-macro-lens.aspx. ShutterNews.com isn't responsible for the article's content.
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